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A \(F(x) = 3\cos x + 2\ln \left| x \right| - {e^x} + C.\)                  

B \(F(x) =  - 3\cos x - 2\ln \left| x \right| - {e^x} + C.\)

C \(F(x) =  - 3\cos x + 2\ln \left| x \right| - {e^x} + C.\)              

D \(F(x) = 3\cos x + 2\ln \left| x \right| + {e^x} + C.\)

A \(( - 2;0).\)                                         

B  \(( - 1;1).\)                                        

C \(( - 3; - 1).\)                                     

D  \((0;2).\)

A \(250.\)                                               

B \(17.\)                                                  

C \(22.\)                                                  

D \(12.\)

A \(\dfrac{8}{3}\pi {a^3}.\)           

B \(2\pi {a^3}.\)                                  

C \(\dfrac{{10}}{3}\pi {a^3}.\)       

D \(4\pi {a^3}.\)

A   \(A_n^k = \dfrac{{n!}}{{\left( {n - k} \right)!}}.\)                       

B \(A_n^k = \dfrac{{n!}}{{k!\left( {n - k} \right)!}}.\)                   

C  \(A_n^k = \dfrac{{n!}}{{k!}}.\)    

D \(A_n^k = \dfrac{{k!\left( {n - k} \right)!}}{{n!}}.\)

A \(1 + \dfrac{1}{e}.\)                       

B \(\dfrac{2}{e}.\)                              

C \(\dfrac{1}{e}.\)                              

D  \(1 + \dfrac{2}{e}.\)

A  \(\left( {3;2; - 2} \right).\)          

B \(\left( {3; - 2;2} \right).\)           

C \(\left( { - 2;3;2} \right).\)           

D  \(\left( {2;3; - 2} \right).\)

A \(\dfrac{{{x^3}}}{3}.\)                   

B \(\dfrac{{{x^2}}}{2} + C.\)           

C \(\dfrac{{{x^3}}}{3} + C.\)           

D \(2x + C.\)

A  \(( - 2;1).\)                                        

B  \(( - \infty ; - 2).\)                          

C  \((1; + \infty ).\)

D \(( - \infty ; - 2) \cup (1; + \infty ).\)

A  \(\dfrac{{\sqrt {14} }}{2}.\) 

B \(\dfrac{{\sqrt {14} }}{4}.\) 

C \(\dfrac{{\sqrt 6 }}{6}.\)      

D \(\dfrac{{\sqrt 6 }}{3}.\)

A   \(M( - 2;1).\)                                   

B \(M(2; - 1).\)                                     

C \(M(2;1).\)                                         

D  \(M( - 2; - 1).\)

A  \(x = 5.\)                                            

B \(x = 4.\)                                             

C  \(x = 8.\)                                            

D \(x = {\log _{16}}2.\)

A  \( - \dfrac{{29}}{2}.\)                    

B \(\dfrac{{31}}{2}.\)                         

C  \( - \dfrac{{31}}{2}.\)                    

D \(\dfrac{{29}}{2}.\)

A  \(5\)                                                    

B \(3\)                                                     

C  \(2\)                                                    

D  \(1\)

A \(f'\left( x \right) = \dfrac{1}{{\left( {3{x^2} + 2} \right)\ln 2}}.\)

B  \(f'\left( x \right) = \dfrac{{6x.\ln 2}}{{3{x^2} + 2}}.\)            

C  \(f'\left( x \right) = \dfrac{{6x}}{{\left( {3{x^2} + 2} \right)\ln 2}}.\)

D  \(f'\left( x \right) = \dfrac{{\ln 2}}{{3{x^2} + 2}}.\)

A  \(( - \infty ; - 1) \cup (0;1).\)     

B \(( - \infty ; - 1)\) và \((0;1).\)    

C \(( - 1;0)\) và \((1; + \infty ).\)   

D  \(( - 1;1).\)

A \(D = \left( { - \infty ;2} \right).\)                                                     

B \(D = \mathbb{R}\backslash \left\{ 2 \right\}.\)                       

C \(D = \left( {2; + \infty } \right).\)                                                    

D \(D = \mathbb{R}.\)

A \(7\)                                             

B \(5\)                                                     

C \( - 1\)                                                 

D \(1\)   

A \(\dfrac{1}{{2992}}.\)                    

B \(\dfrac{1}{{3246320}}.\)             

C \(\dfrac{1}{{39270}}.\)                  

D \(\dfrac{2}{{6545}}.\)

A  \(3\sqrt {10} .\)                              

B \(4\sqrt {10} .\)                               

C \(2\sqrt {10} .\)                               

D \(\sqrt {10} .\)

A \({2019^{1009}}.\)          

B \({2019^{2010}}.\)                          

C \({2019^{2019}}.\)                          

D \({2.2019^{1009}}.\)

A 0

B 1

C 2

D 3

A \(2{a^3}.\)                                         

B \(2{a^3}\sqrt 3 .\)                          

C \(\dfrac{{4{a^3}}}{3}.\)                 

D \(\dfrac{{2{a^3}}}{3}.\)

A \(V = \pi \int\limits_1^2 {f\left( x \right)\,{\rm{d}}x} .\)       

B \(V = \pi \int\limits_1^2 {{f^2}\left( x \right)\,{\rm{d}}x} .\)                                                      

C  \(V = \int\limits_1^2 {{f^2}\left( x \right)\,{\rm{d}}x} .\)    

D \(V = 2\pi \int\limits_1^2 {{f^2}\left( x \right)\,{\rm{d}}x.} \)

A  \(x - y - 1 = 0.\)

B \(x - y + 1 = 0.\)                

C  \(x - y - 2 = 0.\)                

D \(x - y + 2 = 0.\)

A \(\overrightarrow u  = \left( { - 2;3;0} \right).\) 

B \(\overrightarrow u  = \left( {2;3;0} \right).\)                            

C \(\overrightarrow u  = \left( { - 2;3;3} \right).\)                         

D \(\overrightarrow u  = \left( {1;2;3} \right).\)

A \({2^{\dfrac{{ - 3 + \sqrt {13} }}{2}}}.\)                                          

B \({2^{\dfrac{{ - 1 + \sqrt {13} }}{2}}}.\)                                          

C \({2^{\dfrac{{ - 3 - \sqrt {13} }}{2}}}.\)                                           

D \({5.2^{\dfrac{{ - 1 - \sqrt {13} }}{2}}}.\)

A 3

B 1

C 2

D 4

A \(24.\)                                                 

B \(26.\)                                                  

C \(27.\)                                                  

D \(23.\)

A \(\left\{ \begin{array}{l}x = 2 - 2t\\y =  - 1 + t\\z = 3 - 3t\end{array} \right..\)                    

B \(\left\{ \begin{array}{l}x = 3 - 3t\\y =  - 6 + 6t\\z = 2 - 2t\end{array} \right..\)                  

C  \(\left\{ \begin{array}{l}x = 3 - 3t\\y = 6 + 6t\\z = 2 - 2t\end{array} \right..\)                    

D \(\left\{ \begin{array}{l}x =  - 6 + 6t\\y = 3 - 3t\\z = 2 - 2t\end{array} \right..\)

A \(\dfrac{{a\sqrt 2 }}{4}.\)    

B \(\dfrac{{a\sqrt 2 }}{2}.\)   

C   \(\dfrac{{a\sqrt 3 }}{4}.\)    

D  \(\dfrac{{a\sqrt 3 }}{2}.\)

A \(S = \dfrac{{148}}{{49}}.\)          

B \(S = \dfrac{{49}}{{148}}.\)          

C \(S =  - \dfrac{{50}}{{49}}.\)         

D \(S =  - \dfrac{{49}}{{50}}.\)

A  \({\left( {x + 1} \right)^2} + {\left( {y + 5} \right)^2} + {\left( {z + 3} \right)^2} = 70.\)              

B \({\left( {x - 1} \right)^2} + {\left( {y - 5} \right)^2} + {\left( {z - 3} \right)^2} = 30.\)          

C \({\left( {x - 1} \right)^2} + {\left( {y - 5} \right)^2} + {\left( {z - 3} \right)^2} = 35.\)         

D  \({\left( {x + 1} \right)^2} + {\left( {y + 5} \right)^2} + {\left( {z - 3} \right)^2} = 35.\)

A 6

B 8

C 9

D 10

A 3

B 0

C 1

D 2

A đáy là một tứ giá                            

B 6 cạnh.                                              

C   4 đỉnh                                                

D 4 mặt.

A 7

B 4

C 6

D 5

A \({\left( {x + 4} \right)^2} + {\left( {y + 1} \right)^2} + {z^2} = 9\,.\)                                          

B \({\left( {x + 4} \right)^2} + {\left( {y + 1} \right)^2} + {z^2} = 36\,.\)

C \({\left( {x - 4} \right)^2} + {\left( {y - 1} \right)^2} + {z^2} = 36\,.\)                                          

D \({\left( {x - 4} \right)^2} + {\left( {y - 1} \right)^2} + {z^2} = 9\,.\)

A \(\dfrac{x}{2} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 1}}{2}.\)  

B \(\dfrac{x}{2} = \dfrac{{y + 1}}{1} = \dfrac{{z - 1}}{{ - 2}}.\)  

C \(\dfrac{x}{2} = \dfrac{{y + 1}}{1} = \dfrac{{z + 1}}{{ - 2}}.\)

D \(\dfrac{x}{2} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z + 1}}{2}.\)

A \(\left| z \right| = \dfrac{{4\sqrt {34} }}{{17}}.\)                      

B \(\left| z \right| = \dfrac{{2\sqrt 5 }}{5}.\)                                  

C  \(\left| z \right| = \dfrac{4}{5}.\)                                                   

D  \(\left| z \right| = \dfrac{5}{4}.\)

A \(\dfrac{{{a^3}}}{3}\).                   

B \(\dfrac{{{a^3}}}{2}\).                   

C \(\dfrac{{{a^3}}}{6}\).                   

D \(\dfrac{{{a^3}}}{4}\).

A 8

B 6

C 7

D 4

A \(\vec n = \left( { - 1;\;3;\; - 1} \right).\)                                       

B \(\vec n = \left( {2;\; - 1;\;3} \right).\)                                           

C \(\vec n = \left( {2;\; - 1;\; - 3} \right).\)                                       

D \(\vec n = \left( {2;\; - 1;\; - 1} \right).\)

A 6

B 8

C 4

D 5